soror-, sorori-, soro- +

(Latin: sister [family member])

Soroptimist (s), Soroptimists (pl) (nouns)
A member of an international organization of professional women and businesswomen that promotes public service.
sororal (adjective)
1. By one's sister; on a sister's side.
2. Of or pertaining to, characteristic of, a sister or sisters; sisterly.
sororate (s), sorortes (pl) (nouns)
1. The marriages that take place when men have two or more sisters as wives after the first wives have been found to be barren or after their deaths.
2. Marriage to a deceased wife's sister: "Some societies have sororate as a custom when a widower marries a younger sister of his deceased wife."
sororial (adjective)
Sisterly; a sisterly manner.
sororially (adverb)
sororicidal (adjective)
A reference to someone who kills his or her sister: "The man's sororicidal action shocked everyone who knew his sister."
sororicide (s), sororicides (pl) (nouns)
1. A person who murders his or her sister.
2. The killing of one's sister.
sorority (s), sororities (pl) (nouns)
1. A body or company of women united for some common objective; especially, for devotional purposes; in the U.S., the female section of a church congregation.
2. A women's society in a college or university.
3. A group of women or girls joined together by common interests, for fellowship, etc.; specifically, a Greek-letter college or university organization.
sororize, sororizes; sororized; sororizing (verbs)
To associate, or to hold fellowship, as sisters with each other; to have sisterly feelings with other females.